On 14-Nov-05 Prof Brian Ripley wrote:
On Sun, 13 Nov 2005 [EMAIL PROTECTED] wrote:
[...]
There is one aspect though where R users are in the cold when
it comes to C and FORTAN. If you want to understand the function
'eigen', say, then you can ?eigen to learn about its usage.
You can
Hi Paul,
Here is how an amateur statistician deals with this problem when
analyzing spike trains from simultaneously recorded neurons.
Start by estimating the hazard function h(t) of your several point
processes (if you have a copy of MASS, check out the chapter 13, If you
have a copy of Jim
Marc Schwartz a écrit :
In R version 2.1.0, a matrix method was added to the subset() function,
so I am guessing that you are several versions out of date. Please
upgrade to the latest version, which is 2.2.0, where you will get:
I upgraded and it works fine.
Thanks for the hint.
Many thanks
I don't have the texts you mention but I get the general idea. The
diagram I posted shows only a small fraction of the events I have.
Thank you
Christophe Pouzat wrote:
Hi Paul,
Here is how an amateur statistician deals with this problem when
analyzing spike trains from simultaneously
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Paul,
You can get a version of Lindsey's course at the following address:
http://popgen.unimaas.nl/~jlindsey/manuscripts.html
At the bottom of the page under heading Courses.
Christophe.
paul sorenson wrote:
I don't have the texts you mention but I get the general idea. The
diagram I
Hi,
I am trying to solve a model that consists of rather stiff ODEs in R.
I use the package ODEsolve (lsoda) to solve these ODEs.
To speed up the integration, the jacobian is also specified.
Basically, the model is a one-dimensional advection-diffusion problem,
and thus the
Duncan Murdoch wrote:
Over the weekend I wrote a small package to evaluate poker hands and to
do some small simulations with them. If anyone is interested in looking
at it, I'd appreciate comments and/or contributions.
How do I install this package?
A README or a hint on th webpage below
Hi,
I have the following function:
test - function(x)
{
print(shapiro.test(x))
...
}
The output for test(sample1$sec) is:
Shapiro-Wilk normality test
data: x
W = 0.9447, p-value = 0.5767
...
I would like to see data: sample1$sec instead of data:
On Mon, 14 Nov 2005, Claus Atzenbeck wrote:
Hi,
I have the following function:
test - function(x)
{
print(shapiro.test(x))
...
}
The output for test(sample1$sec) is:
Shapiro-Wilk normality test
data: x
W = 0.9447, p-value = 0.5767
...
I would
See ?image.
Andy
From: peter eric
halo,
how to plot a matrix (i have a multiple matrix ) in graphs in
terms of colored boxes or circles.
my matrix looks like
A B C
6 2 3 4 3 2 2 1 7
A4 3 1 4 6 8 2 1 6
2 7 8
On 11/14/2005 7:39 AM, Dan Bolser wrote:
Duncan Murdoch wrote:
Over the weekend I wrote a small package to evaluate poker hands and to
do some small simulations with them. If anyone is interested in looking
at it, I'd appreciate comments and/or contributions.
How do I install this
KSoet == Soetaert, Karline [EMAIL PROTECTED]
on Mon, 14 Nov 2005 13:20:24 +0100 writes:
KSoet Hi, I am trying to solve a model that consists of
KSoet rather stiff ODEs in R.
KSoet I use the package ODEsolve (lsoda) to solve these
KSoet ODEs.
KSoet To speed up the
I have found a bug/feature with barplot that at least to me shows
undesireable behaviour. When using barplot and plotting fewer
groups/levels/factors(I am unsure what they are called) than the number
of colors stated in a col statement, the colors wrap around such that
the colors are not fixed to
Working through the R archives and webspace, I've mostly proved to myself that
I don't know enough about what statisticians call Curve Fitting to even
begin translating the basics.
I'm a sysadmin, and have collected a variety of measurements of my systems,
and I can draw pretty pictures in R
Hi
I've been greatly enjoying the functionality the zoo package offers.
However I've hit a snag with the following code
a - zoo(matrix(1:10,5,2), 2001:2005)
a
2001 1 6
2002 2 7
2003 3 8
2004 4 9
2005 5 10
a[I(2003), 2]
2003 8
a[I(2003), 2] - NA
Error: subscript
Hi
Given that things like the following work
a - c(-.1, 2.7 ,B)
a
[1] -.12.7 B
as.numeric(a)
[1] -0.1 2.7 NA
Warning message:
NAs introduced by coercion
I naively expected that the following would behave differently.
b - c('10%', '-20%', '30.0%', '.40%')
b
[1] 10%
On Mon, 2005-11-14 at 15:55 +0100, Karin Lagesen wrote:
I have found a bug/feature with barplot that at least to me shows
undesireable behaviour. When using barplot and plotting fewer
groups/levels/factors(I am unsure what they are called) than the number
of colors stated in a col statement,
Tobias,
thanks for the report:
a[I(2003), 2] - NA
Error: subscript out of bounds
Yes, we would have to write a [-.zoo method for that, currently we
rely on the corresponding methods for matrices and vectors. I'll add it
to the WISHLIST and try to add this functionality for the next zoo
On 11/14/05, Brandt, T. (Tobias) [EMAIL PROTECTED] wrote:
Hi
I've been greatly enjoying the functionality the zoo package offers.
However I've hit a snag with the following code
a - zoo(matrix(1:10,5,2), 2001:2005)
a
2001 1 6
2002 2 7
2003 3 8
2004 4 9
2005 5 10
Hello,
I use t.test for normal distributed and wilcox.test for non-normal
distributed samples.
It is easy to write a function for t.test that calculates the effect
size, because all parts of the formula are available from the t.test
result: r = sqrt(t*t / (t*t + df))
However, for Wilcoxon
On 11/14/05, Brandt, T. (Tobias) [EMAIL PROTECTED] wrote:
Hi
Given that things like the following work
a - c(-.1, 2.7 ,B)
a
[1] -.12.7 B
as.numeric(a)
[1] -0.1 2.7 NA
Warning message:
NAs introduced by coercion
I naively expected that the following would behave
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Allen S. Rout wrote:
Working through the R archives and webspace, I've mostly proved to
myself that I don't know enough about what statisticians call
Curve Fitting to even begin translating the basics.
I'm a sysadmin,
I have just the thing
Hi.
Can anyone point me to any module in R which implements Little's Chi
Square test for MCAR.
The problem is that i have around 60 behavioural variables on a 6 point
categorical scale which i need to test for MCAR and MAR. What i can make
out from preliminary analysis is that moderate (0.30
This depends on the analysis you want to do; Maximum Likelihood will
give you unbiased results even under MAR. In this case the more
relevant question is whether the missing data mechanism is MNAR, in
which case ML might give you biased results. Unfortunately you cannot
test MNAR without
-Original Message-
From: Gabor Grothendieck [mailto:[EMAIL PROTECTED]
Sent: 14 November 2005 06:21 PM
On 11/14/05, Brandt, T. (Tobias) [EMAIL PROTECTED] wrote:
Hi
Given that things like the following work
a - c(-.1, 2.7 ,B)
a
[1] -.12.7 B
as.numeric(a)
[1] -0.1 2.7
On 11/14/05, Brandt, T. (Tobias) [EMAIL PROTECTED] wrote:
-Original Message-
From: Gabor Grothendieck [mailto:[EMAIL PROTECTED]
Sent: 14 November 2005 06:21 PM
On 11/14/05, Brandt, T. (Tobias) [EMAIL PROTECTED] wrote:
Hi
Given that things like the following work
a -
On Mon, 2005-11-14 at 19:07 +0200, Brandt, T. (Tobias) wrote:
-Original Message-
From: Gabor Grothendieck [mailto:[EMAIL PROTECTED]
Sent: 14 November 2005 06:21 PM
On 11/14/05, Brandt, T. (Tobias) [EMAIL PROTECTED] wrote:
Hi
Given that things like the following work
a
Charlotte Reemts wrote:
marked planar point pattern: 628 points
multitype, with levels = w2004 w2005
window: rectangle = [ 607200 , 634800 ] x [ 3438400 , 3460400 ]
I just created something as close as possible to that using random
poisson points:
oakfake
marked planar point
Package 'sfsmisc' has had a function 'rnls()' for a while
which does robust non-linear regression via M-estimation.
[The name of the function is probably *really* a misnomer,
since the 'ls' part stands for least squares!]
Two weeks ago, there's been a small workshop
Robustness and R in
-Original Message-
From: [EMAIL PROTECTED] [SMTP:[EMAIL PROTECTED] On Behalf Of Vermeiren, Hans
[VRCBE]
Sent: Sunday, November 13, 2005 7:48 PM
To: 'r-help@stat.math.ethz.ch'
Subject: [R] Robust Non-linear Regression
Hi,
I'm trying to use Robust non-linear regression
Hi there,
I've been trying to use fitdistr fuction to fit our data onto a gamma
distribution, sometimes it works and sometimes it doesn't. I realized that
our data 10% of time is normal distributed instead of gamma. Since this is
included in a processing pipeline, I'd like to test the fitting to
Is there an R function analogous to the C function strtol?
I would like to convert a binary string into an integer.
Cheers for advice
Will
--
__
William Astle
Statistical Genetics,
David Balding's Group.
Imperial College,
St Mary's Hospital
In going over the creation of the point pattern (again), I discovered a typo
that switched x and y data. Once I fixed that, the code worked just fine.
Thanks for your help!
Charlotte Reemts wrote:
marked planar point pattern: 628 points
multitype, with levels = w2004 w2005
window:
On Mon, 2005-11-14 at 19:01 +, William Astle wrote:
Is there an R function analogous to the C function strtol?
I would like to convert a binary string into an integer.
Cheers for advice
Will
There was some discussion in the past and you might want to search the
archive for a more
Here comes a not-so-nice one: Sorry to be blunt, but I think the current
reality is that one's effectiveness in scientific computing is not likely to
be high if s/he can't read C for Fortran code.
The mode of development for new methods, I believe, should be:
- Write it in R (or S-PLUS or
Dear R-users,
I am looking for an elegant way to change some levels of a factor column
in data frame according to a condition.
Lets look at the following data frame:
data.frame(crit1=gl(2,5), crit2=factor(letters[1:10]), x=rnorm(10))
crit1 crit2 x
1 1 a -1.06957692
2
Alejandro == Alejandro Veen [EMAIL PROTECTED]
on Mon, 14 Nov 2005 10:23:02 -0800 writes:
Alejandro For finding the root of the following function I
Alejandro have been using 'uniroot': f(p) = log(p-1) -
Alejandro log(p) + 1/(p-1) - log(A) - B = 0
Alejandro where 'p' is a
I wish to make modifications to the plot.pedigree function in the
kinship package. My attempts to contact the maintainer have been
unsuccessful, but my question is general, so specifics of the kinship
package might not be an issue.
My first attempt was to make a new function Plot.pedigree in the
try this:
# create data
x.by http://x.by - data.frame(crit1=rep(c(1,2),c(10,10)),
crit2=sample(letters[1:4],20,T), val=runif(20))
levels(x.by$crit2) - c(levels(x.by$crit2), 'small') # add 'small' to the
levels
y - by(x.by http://x.by, x.by$crit1, function(.grp){
.small - order(.grp$val) # find
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Hi Gesman
There may be more elegant ways to do this but here is one option:
d=data.frame(crit1=gl(2,5), crit2=factor(letters[1:10]), x=rnorm(10))
#Creates data
levels(d$crit2)=c(levels(d$crit2),Small)#Adds the level Small to the
factor crit2.
d2=d[order(d$crit1,d$x),]#Sorts x ascending, by
However code readability can not be over-emphasized. I must admit to have
written R code in such a supposedly `clever' way that I can't figure out
what I was trying to do (or how I did it) a week later...
Andy
From: Ernesto Jardim
Hi,
One single comment about the subject of this
Hi,
I'm struggling with foreign to import a SAS file. The file, for lack of
imagination, is d.sas7bdat and is in my root directory (c:\) under Windows XP.
When I type
read.ssd(c:\\, d)
which I think I'm suppose to enter, I get
SAS failed. SAS program at
I am having what I think is a strange problem with applying TukeyHSD to
an aov fit with error strata.
TukeyHSD is supposed to take A fitted model object, usually an 'aov'
fit. aov (with error strata) is supposed to generate an object of type
aovlist, which is a list of objects of type aov. But
Andy:
Ah, don't feel bad, Andy; this is a universal problem in programming that
despite all kinds of efforts in lucid programming, OOP, etc. no one has
figured out. So while code readability cannot be overemphasized, what this
actually means also apparently cannot be defined.
From:
Dear all,
just a little problem report for R 2.2.0 on OpenSuse 10.0-64. Gcc version is
4.0.2
Installing fortran packages runs into: 'cc1' command not found.
I apparently got away with:
sudo ln -s /usr/bin/cc /usr/bin/cc1
which causes other warnings but the packages seem to function well.
Folks,
Leo Gürther and I have been privately discussing the
problems with imputation using NORM which he originally
described on 9 November. Essentially, he observed that
many of the imputed missing values were totally absurd,
being well out of any range comatible with the observed
values of the
Dear all,
I'm looking for how can I input a linear model with an arma model,like
log(y) = 8.95756 + 0.0346414^t - 0.1*t^2 + ut
ut=-0.296ut-1+at-0.68at-1
where log(y) is qudratic function ,for the time series trend,
and get then get the residuals from the first function.
Dear all,
I'm looking for how can I input a linear model with an arma model,like
log(y) = 8.95756 + 0.0346414^t - 0.1*t^2 + ut
ut=-0.296ut-1+at-0.68at-1
where log(y) is qudratic function ,for the time series trend,
and get then get the residuals from the first function.
In what sense is this a problem report for R? R does not know about
cc1, unless some user told it to use it.
cc1 is an internal part of gcc (the C front-end), usually found in
/usr/libexec/gcc/i686-pc-linux-gnu/4.0.2
or some such path. As my path shows, it is part of gcc 4.0.2, so this
looks
On Mon, 2005-11-14 at 22:55 +, Walter R. Paczkowski wrote:
Hi,
I'm struggling with foreign to import a SAS file. The file, for lack of
imagination, is d.sas7bdat and is in my root directory (c:\) under Windows
XP. When I type
read.ssd(c:\\, d)
which I think I'm suppose to
If sas isn't in the path, then you might have trouble with sas.get or
read.ssd.
Assuming you are using windows, go to the Start menu, select run and type
sas. If sas fires up it's in your path, if not then that is the reason.
--Matt
-Original Message-
From: [EMAIL PROTECTED]
It is highly unlikely that SAS is on the path, as it does not put itself
there.
read.ssd () has a 'sascmd' argument to give the path to SAS. This is
explained *with a functioning Windows example*, on the help page for
read.ssd.
On Mon, 14 Nov 2005, Austin, Matt wrote:
If sas isn't in the
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